Coil winding machine provided with a plurality of bobbins for continuous winding



Dec. 28, 1954 J. L. WINKLER 2,693,,M5

con, WINDING MACHINE PROVIDED WITH A PLURALITY OF BOBBINS FOR CONTINUOUS WINDING Filed Feb. 5, 1955 2 Sheets-Sheet 1 7 v 7 a 6 I 3 IO N INVENTOR JUAN L. WINKLER ATTORNEY Dec. 28, 1954 J. L. WINKLER COIL WINDING MACHINE PROVIDED WITH A PLURALITY 0F BOBBINS FOR CONTINUOUS WINDING 2 Sheets-Sheet 2 Filed Feb. 5, 1953 INVENTOR JUAN L. WINKLER BY z yw wp ATTORNEY United States Patent '0 COIL WINDING liviACI-IINE PROVIDED WITH A PLURALITY F ROBBINS FOR CONTINUOUS WINDING Juan L. Winkler, Buenos Aircs, Argentina Application February '5, 1953, Serial No. 335,327

3 Claims. (Cl. 242-80) The present invention is directed to a coil winding machine with continuous winding action, provided with -.a plurality of bobbins to enable same to receive the turns of wire, or the like, that are produced by a wire drawing machine, particularly of the kind entitled multiple drawing machine.

in the present state of the art it is customary, once the bobbin has been fully wound from the drawing machine, to arrest the movement of both the drawing and the winding machine, cut the wire, remove the full bobbin .and replace it by an empty one, fasten the end of the wire to the fresh bobbin and restart the winder and the drawing machine.

Obviously this method requires regular intervals of paralization of both the machines, whereby loss of time, corresponding to the time required for changing the bobbins, the restarting of the machines, etc. .is sufiered and this unavoidable restarting of the machinery consumes .a far greater amount of energy than does the normal running of the same machines, causing a greater consumption of current and/ or fuel by the prime mover.

The winding machine of the instant invention eliminates all the above-mentioned inconveniences, and, once a bobbin is fully wound, the mere throwing over of .a lever suffices to disengage the bobbin from the line, as the machine cuts and disengages the wire, simultaneously fixing the cut end upon the second bobbin, which continues the winding of the wire without having .to stop .the movement of either the drawing or the winding machine.

One of the advantages that derive from the use of this invention is that of obtaining the maximum theoretical performance from themachine and of eliminating the loss of time caused by stoppages for removing loaded bobbins etc.

Another advantage is that of obtaining a practically uniform consumption of energy for the winding machine by eliminating the stops necessary for threading the wire and fixing same on each fresh bobbin.

Other advantages will become apparent in the course of this specification wherein is now described a realization of the said winding machine that has proved itself to be highly satisfactory in practice, but is to be under stood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents which fall within the scope of the appended claims.

For a clearer description of the detailed parts of this invention two sheets of drawings are attached to this specification, wherein:

Fig. 1 is a sectional elevation of the coil winding machine according to this invention. Fig. 2 is a schematic elevation of a portion of the winder with bobbins in place. Fig. 3 is a plan of the same portion of the winder, seen from below, and Fig. 4 is a different embodiment of a detail of the machine seen in perspective.

Referring to the accompanying drawings it will be seen that the winder 1 consists of a supporting frame 2, preferably in the form of a bench or table, the interior of which contains at least two conveniently arranged transmission units, controllably operated by a source of energy such as an electric motor, each of which units is coupled to a substantially vertical shaft 3 extending above the supporting frame 2 to carry the bobbin 4. The supporting frame 2, apart from its principal portions, is provided with internal stifie'ning and strengthening webs 5 as well as with a head 6 formed by a concave plate bolted to the corresponding upper portion of the frame 2, and provided all with interior radial ribs 7 attached to its sides and bottom 3, which latter has an opening surrounded by a flange 9, pertaining to a hollow column 10 with radially extending webs 11, said column 10 being supported at its open lower end by the outer wall of a gearbox 12 containing an oil bath.

The gear box 12 includes a rotatable shaft 13 the ends of which extend outside the gear box 12, one of said ends having a brake pulley 14 attached to same, whilst the other or opposite end of the shaft v13 has a transmission pulley 15 or other power transmission means whereby the two units are coupled in a controllable manner.

The brake pulley 14 is provided with brakingrneans 16 at its lower portion, said means being mounted upon an axle 17 supported by a bracket arm 18 at one .end and having an operating lever 19 attached to its other end, whilst the power transmission means 15, controllably uniting the two units, is provided with controlling means 20 consisting of a friction plate 21.

The bobbins 4 and 4 have truncated cone-shaped 11pper portions 22 adapted to allow the slipping ,on and off of interchangeable bobbins from above and have a central opening 23 at their lower ends wherein is provided a toothed wheel or pinion 24- keyed to the vertical shaft 3.

The bobbins 4. and 4 are, at least in part, loosely attached to their respective axles 3 and 3' and these axles or vertical shafts are provided at their lower ends with the necessary bevel gears 25 and 25 and pinions 26 and 26 fixed to the driving shaft 13 and coupled .to the bevel gears 25 and 25 alternately by means of the hand control 20 and the gear shaft 21a. The motor shaft 13 may be directly coupled to an electric motor as shown schematically in Fig. 2, or may be driven by any suitable power means. The bobbins 4 and 4' revolve in opposite directions as indicated by the arrows in Fig. 2.

The lower portion of each of the bobbins has suitable openings 27 and 27 arranged in the form of channel chords of its horizontal circular section. These channels 27 and 27' carry individual rack rods 28 and 2.8'of rectangular section provided with gear teeth along one .of their respective sides 29 and 29. These rack rods 28.and 28', furthermore have catch'hooks 30 and 30':at their corresponding ends, the .principal plane of which is parallel to the toothed side of each rack rod.

This device is operatively engaged by means of a lever 31 seen in Fig. 1, pivotally mounted upon a support 32 andcoupled at its inner end to ashaft .33 controlling the rack rods 28 and 28, respectively.

The inner end of the channel 27 has a stop element 34 that limits the inward movement of the rack rod 28 and a wedge shaped body 35 is fixed between the bobbins 4 and 4' which provides two plane surfaces of support 36 and 36 for the rack rods 28 and 28' when these emerge from their respective bobbins, as seen at the left of Figs. 2 an 3.

The mouth of the channel 27 has a rounded edge 37 at the toothed side of the corresponding rack rod 28, whilst the opposite side of the mouth of the channel 38' is provided with a cutting edge. These rounded and cutting edges 37 and 38 are made of specially hard material, preferably of tempered steel. The bobbins are furthermore provided with guide means 39 for the wire 40.

When starting up, the operation is the same as in the normal coil winding machines, namely: the free end of the wire 4-0 coming from the drawing machine is fastened to the empty bobbin by hand. The wire drawing machine and the coil winder are then put in motion until the bobbin has been loaded with the desired quantity of wire. When the bobbin 4 is running, the rack rod 28 is inside same, whilst the rack rod 28 in the stationary bobbin 4 projects outside the mouth of the channel 27 and rests upon the plane surface 36' of the member 35.

Once the bobbin 4 is fully wound, it is uncoupled by means of the control lever 20 which withdraws the pinion 26 driving the said bobbin 4 and simultaneously connects the pinion 26' driving the bobbin 4 which then commences to turn upon the shaft 3' together with its toothed wheel 24 in the direction shown by the arrow. This movement of the toothed wheel 24' acting upon the teeth of the rack rod 28 causes the latter to slide upon the plane surface 36' of the member 35 and withdraw into the channel 27'.

The wire 40 which runs freely through the hook 30 is thereupon made to deviate from its former course as shown by the dotted lines in Fig. 3, being held by the hook .30 the wire is brought down and pulled sharply between the rounded corner 37 and the sharp edge 38' of the mouth of the channel 27 which shears the wire and simultaneously engages the running end of the wire by imprisoning same between the edge of the hook 30' and the rounded edge 37' of the mouth of the channel 27'.

The rack rod 28' continues on its course of entry into the channel 27' until its motion is stopped by the stop element 34', at which point it has entered entirely into the channel for the whole of its length and cannot again emerge on account of being held by the teeth of the gear wheel 24 in respect to movement in one direction and by the stop element 34 in respect to movement in the other direction.

Meanwhile the bobbin 4' has commenced to turn integrally with the gear wheel 24 and the wire 40 commences to be wound upon the bobbin 4', whilst the full bobbin 4 can be unloaded and the rack rod 28 is driven out of the bobbin 4 by means of the spring 41 extending from the mouth of the channel 27 and supported by the fiat surface 36 of the member 35 until such time as the lever 20 is again thrown over and the pinion 26 is once more geared to the bevel wheel 25 when the whole operation is repeated by the bobbin 4 with its corresponding parts.

In the realization of this invention described above, the fastening of the wire to the empty bobbin is achieved between the rack rod hook 30 and the rounded edge 37 of the mouth of the channel 27, the dimensional distance between the said two surfaces being fixed and, therefore, cannot be adjusted to wires of a different diameter.

There are several methods that may be preferred to the above and one of these variants is shown in Fig. 4, wherein the rack rod 28a is shown to be provided with the corresponding book 30. Here the rack rod is mounted .-upon a slide rod, or bar 42, the forward end of which is --in operative engagement with the hook 30, whilst the further end of the said slide rod 42 rests against a spring 43, which latter is supported in turn by the stop element 34a.-

The operative surfaces of the hook 30 and the slide rod'42, namely the surfaces that actually hold the wire 40, are appropriately roughened and tempered for this purpose.

Similar results to those described above can be ob- 5 'tained by different types of construction of the rack rod 28, for instance, by fastening the rack upon a slide rod by displaceable means, coupling same with a tension spring attached to a fixed point within the bobbin.

The apparatus herein described may furthermore be provided with a device for cooling the product of the drawing machine at a point between that of its exit from the drawing machine and entrance into the coil winder, said cooling being preferably effected by means of a stream of compressed air directionally discharged from suitable nozzles provided for this purpose.

What I claim is:

1. A coil winding machine provided with a plurality of bobbins for continuous winding action, comprising a supporting frame, a pair of substantially vertical shafts extending downwardly from the top of said frame each adapted to dismountably support one of said bobbins, a power transmission unit coupled to the lower end of each shaft, gear means for starting the rotation of said shafts, brake means for stopping the rotation of said shafts, a pinion connected to the upper end of each shaft within a bobbin, a rack rod extensible through a peripheral opening in each bobbin to mesh withsaid pinion, a stop element integrally formed in each bobbin and located at the inner end of said opening in cooperative connection with the corresponding end of said rack rod, an external stop element positioned between the two bobbins to prevent rotary movement of said bobbins when the rack rod is operatively held by said first stop element, a hook formed integrally at the opening end of said rack rod smaller than said opening, a rounded edge formed on one side of each said bobbin opening adjacent the rack teeth, and a tempered cutting edge formed on the opposite edge of said opening.

2. A coil winding machine as claimed in claim 1, in which the length of each rack rod including its hook is less than the depth of the opening in the bobbin.

3. A coil Winding machine as claimed in claim 1, including a slide bar guide means within each rack rod having one end cooperating with the inner curve of the hook, and a spring within said rack rod controlling the travel of said bar guide means and the spaces between the end of said bar guide means and the inner curve of the hook.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,393,286 Hosford Oct. 11, 1921 1,637,700 Lee et al. Aug. 2, 1927 1,846,894 Morgan Feb. 23, 1932 

